Other
Scientific paper
Feb 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992jgr....97.2621l&link_type=abstract
Journal of Geophysical Research (ISSN 0148-0227), vol. 97, no. E2, Feb. 25, 1992, p. 2621-2627. Research supported by NASA.
Other
5
Adsorption, Carbon Monoxide, Ice, Mars Atmosphere, Metal Oxides, Adsorptivity, Aluminum Oxides, Atmospheric Chemistry, Calcium Oxides, Iron Oxides, Magnesium Oxides, Silicon Oxides, Titanium Oxides
Scientific paper
The adsorption of carbon monoxide (CO) on water ice and on the oxides Fe2O3, Fe3O4, Al2O3, SiO2, CaO, MgO, and TiO2 (rutile and anatase) has been investigated in a flow reactor. A mass spectrometer was employed as a detector to monitor the temporal concentrations of CO. Adsorption coefficients as large as 1 x 10 exp -4 were measured for CO on TiO2 solids in helium at 196 K. The fractional surface coverage for CO on TiO2 solids in helium was also determined to be approximately 10 percent at 196 K. The upper limits of the fractional surface coverage for the other oxides (Fe2O3, Fe3O4, Al2O3, SiO2, CaO, and MgO) and water ice were also measured to be less than 1 percent. The implications for the stability of CO2 in the Martian atmosphere and the 'CO hole' observed by the Phobos/ISM experiment are discussed.
Anbar Ariel D.
Blamont E. J. E. J.
Keyser Leon F.
Leu Ming-Taun
Sander Stanley P.
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